Persistent drought across the Colorado River basin, combined with the 2025-2026 winter's record-low snowpack and resulting meager inflows (as low as 13-29% of average), has driven Lake Powell to near-record lows around 3,520 feet in August 2026. High temperatures accelerate evaporation and reduce runoff efficiency, while Glen Canyon Dam releases continue to meet downstream demands. Bureau of Reclamation 24-month studies project end-of-year elevations near 3,504-3,516 feet under minimum-to-most-probable scenarios, with upstream transfers from Flaming Gorge offering limited mitigation. Trader consensus clusters in the 3,490-3,510 foot range due to uncertainty in fall inflows, temperature-driven evaporation rates, and operational release adjustments before winter recovery begins.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedHow low will Lake Powell drop?
3,500–3,510 ft 35%
Above 3,510 ft 31%
3,490–3,500 ft 27%
Below 3,490 ft 5%
Above 3,510 ft
31%
3,500–3,510 ft
28%
3,490–3,500 ft
27%
Below 3,490 ft
5%
3,500–3,510 ft 35%
Above 3,510 ft 31%
3,490–3,500 ft 27%
Below 3,490 ft 5%
Above 3,510 ft
31%
3,500–3,510 ft
28%
3,490–3,500 ft
27%
Below 3,490 ft
5%
Resolution is determined by the lowest daily elevation recorded at Lake Powell (Glen Canyon Dam, USBR site) between market creation and March 31, 2027. Because a lower reading can occur at any point up to March 31, 2027, all outcomes are settled after the window closes, based on the lowest daily elevation recorded during the window.
The resolution source is the minimum daily lake elevation published by the U.S. Bureau of Reclamation for Lake Powell at Glen Canyon Dam, available at https://data.usbr.gov/catalog/2362/item/508. USBR data is provisional and subject to revision; the lowest daily elevation reflected in USBR data as of April 15, 2027 governs, and revisions published after April 15, 2027 will not change the outcome. Daily elevation data published at https://lakepowell.water-data.com/ may also be referenced, but if it disagrees with USBR, the USBR value governs.
Market Opened: Aug 17, 2026, 5:49 PM ET
Resolution Source
https://data.usbr.gov/catalog/2362/item/508Resolver
0x69c47De9D...Resolution is determined by the lowest daily elevation recorded at Lake Powell (Glen Canyon Dam, USBR site) between market creation and March 31, 2027. Because a lower reading can occur at any point up to March 31, 2027, all outcomes are settled after the window closes, based on the lowest daily elevation recorded during the window.
The resolution source is the minimum daily lake elevation published by the U.S. Bureau of Reclamation for Lake Powell at Glen Canyon Dam, available at https://data.usbr.gov/catalog/2362/item/508. USBR data is provisional and subject to revision; the lowest daily elevation reflected in USBR data as of April 15, 2027 governs, and revisions published after April 15, 2027 will not change the outcome. Daily elevation data published at https://lakepowell.water-data.com/ may also be referenced, but if it disagrees with USBR, the USBR value governs.
Resolution Source
https://data.usbr.gov/catalog/2362/item/508Resolver
0x69c47De9D...Persistent drought across the Colorado River basin, combined with the 2025-2026 winter's record-low snowpack and resulting meager inflows (as low as 13-29% of average), has driven Lake Powell to near-record lows around 3,520 feet in August 2026. High temperatures accelerate evaporation and reduce runoff efficiency, while Glen Canyon Dam releases continue to meet downstream demands. Bureau of Reclamation 24-month studies project end-of-year elevations near 3,504-3,516 feet under minimum-to-most-probable scenarios, with upstream transfers from Flaming Gorge offering limited mitigation. Trader consensus clusters in the 3,490-3,510 foot range due to uncertainty in fall inflows, temperature-driven evaporation rates, and operational release adjustments before winter recovery begins.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated

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